FLEX I/O Module | 1794-OE4 Series B | Allen Bradley
The Allen-Bradley 1794-IB16 is a versatile FLEX I/O discrete input module with 16 24V DC sinking input channels, ensuring seamless integration of sensors and switches for efficient industrial control. Its compact design, robust power characteristics, and compatibility with communication protocols make it a reliable solution for diverse applications within the Allen-Bradley FLEX I/O product family.
Model: 1794-OE4 Series B
Type: FLEX I/O Module
Introduction:
Unveiling the Allen-Bradley 1794-OE4 Series B, a pivotal output module within the Flex I/O product line, featuring four non-isolated and single-ended outputs adaptable for voltage or current signals.
This module seamlessly communicates with programmable controllers through diverse network adapters, including DeviceNet, ControlNet, or Ethernet/IP.
Resolution and Conversion Type:
Boasting a 12-bit resolution and employing pulse width modulation conversion for precision.
Operating Conditions:
Functioning in a temperature range of -20 to 55 °C with a power consumption of 75 mA at 24V DC.
Removable Terminal Block:
Facilitating easy wiring and installation with a keying feature preventing incorrect insertion.
Status Indicator:
Providing real-time insights into module health and output status.
Output Ranges:
Supporting four output ranges – 0 to 10V, -10 to 10V, 0 to 20 mA, and 4 to 20 mA.
Configuration Options:
DIP switches on the module or software tools like RSLogix 5000 or Studio 5000 Logix Designer offer versatile configuration.
Accuracy and Noise:
Exhibiting high accuracy with a typical ±0.2% of full scale and low noise, ranging from 50 mV to a maximum of 100 mV peak-to-peak.
Response Time and Bandwidth:
Delivering a fast response time with a typical settling time of 2 ms and a bandwidth of 250 Hz at -3 dB.
Protection Mechanisms:
Built-in safeguards allowing the module to withstand up to 30V DC on the output terminals without damage. Output current is limited to 25 mA to prevent harm to connected devices.
Mounting and Wiring:
Offering flexible mounting options on a DIN rail or panel/wall. The module supports star, daisy-chain, or tree topology wiring. Extension is possible through Flex I/O extension cables or terminal base units.
Demonstrating a remarkable Mean Time Between Failure (MTBF) of 1,050,000 hours at 40 °C, along with shock resistance of 30 g and vibration resistance of 5 g.
| Specification | Detail | Outputs | Four non-isolated, single-ended outputs, configurable for voltage or current signals |
| Communication | Can communicate with programmable controllers using DeviceNet, ControlNet, or Ethernet/IP network adapters |
| Resolution and Conversion Type | 12-bit resolution, pulse width modulation conversion type |
| Output Ranges | 0 to 10V, -10 to 10V, 0 to 20 mA, 4 to 20 mA; configurable via DIP switches or software tools |
| Accuracy and Noise | Typical accuracy ±0.2% of full scale, maximum accuracy ±0.5% of full scale; typical noise 50 mV peak-to-peak, maximum noise 100 mV peak-to-peak |
| Settling Time and Bandwidth | Typical settling time 2 ms, maximum settling time 4 ms; bandwidth 250 Hz at -3 dB |
| Overvoltage and Overcurrent Protection | Built-in protection, withstands up to 30V DC on output terminals without damage, limits output current to 25 mA |
| Terminal Block | Removable, with keying feature to prevent incorrect insertion; includes a status indicator for module health and output status |
| Mounting and Wiring Options | Flexible mounting on DIN rail or panel/wall; supports star, daisy-chain, or tree topology wiring; extendable with Flex I/O extension cables or terminal base units |
| Power Consumption | 75 mA at 24V DC, 150 mA at 12V DC; Fieldbus current rating is 20 mA |
| Operating Conditions | Temperature range -20 to 55 °C, shock resistance 30 g, vibration resistance 5 g |
| Mean Time Between Failure (MTBF) | 1,050,000 hours at 40 °C |
